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Medicare Advantage

Planning and coordinating care for seniors to improve quality of life.

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Preventative Healthcare

Having a yearly wellness exam is key to preventing many common diseases.

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Infant and Children Healthcare

We are committed to providing personal and quality care for your child.

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Diagnostic Testing

The ability to quickly and clearly evaluate a patient's condition or injury by the use of x-ray and dexa scan is offered in our St. Cloud office.

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Minor Skin Procedures

We offer treatment of lacerations, wart/mole removal, lesions, skin tag removal and other minor procedures.

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Additional Services

We offer a wide range of additional medical services.

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Patient Resources


Are you a new patient and need to complete a patient history or record release form? You can download them here on our website.

If you are looking for additional form types click the tab for "Additional Forms" above.

Need to review HIPPA or financial policies? You can download them here along with our participating insurance list.

John Wilker, M.D.

Dr. John F. Wilker is the founding physician of ProHealth Family Physicians and has been involved in Family Practice in Kissimmee-St.Cloud since 1986. He received his Medical Degree from Case Western Reserve and served 17 years in the Navy as Director of Residency Training for the Naval Hospital rising to the rank of Commander. Dr. Wilker is a member of the Florida and American Academy of Family Physicians, and served as Chief of Staff of Orlando Regional Medical Center-St.Cloud.

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Charles Powers, M.D.

Dr. Charles Powers grew up in central Florida and graduated from Lake Brantley High School. He attended Troy State University, where he met his wife, Vanessa. He received his medical degree from The University of Alabama, Birmingham College of Medicine in 1988. He returned to Florida and completed three years of Family Practice Residency training at Halifax Medical Center in 1991. After residency, he Joined Dr. Wilker in Saint Cloud and has been practicing with ProHealth ever since.

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Paul Thorne, M.D.

Dr. Paul Thorne was born in Calgary, Canada. He has been married to his wife Carolyn since 1983, and has 2 daughters and 2 sons. He completed his undergraduate and medical school training at the University of Calgary. He graduated with his MD degree in 1983. He then completed a residency in Family Medicine at Calgary General Hospital in 1985. He practiced Family Medicine from 1985 to 1995 in Calgary, and also started a Sports Medicine practice and residency program in Calgary.

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Chrisopher Baur, M.D.

Dr. Christopher Baur is a native Floridian. Raised in Gainesville, Dr. Baur met and married his wife, Rhonda, while earning his music degree at Florida State University. He returned to Gainesville and graduated from the University of Florida College of Medicine with an MD in 1992. Dr. Baur completed a three-year Family Practice residency program at Halifax Medical Center in Daytona Beach and entered active military service with the United States Air Force in 1995.

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Ralph Wurster, D.O.

Dr. Ralph Wurster was born in Rochester, N.Y. and grew up in Chicago, Illinois where he attended The University of Illinois in Champagne. Dr. Wurster graduated from Des Moines University of Osteopathic medicine in Des Moines, Iowa. His internship and residency where completed at Florida Hospital East Orlando. Dr. Wurster is board certified in Family Medicine and has been in private practice since 1996. He also volunteers at Christian Ministry Free Clinic. Dr. Wurster enjoys his family, outdoors, motorcycle riding and sports and is married with 6 children.

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Belinda Johnson, M.D.

Dr. Belinda Johnson is a Board-Certified Family physician who completed her undergraduate studies at Rutgers University in New Brunswick, New Jersey and received her Medical Degree at Ross University School of Medicine. She completed her internship and residency at St. Joseph’s Hospital in Phoenix, Arizona. She is the first doctor in her family and has been married almost eight years to her wonderful husband, Corey, and they have one son, Xavier. Dr. Johnson has a passion for community health awareness and feels blessed to be able to relate to patients of all ages.

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Laura Brooks, ARNP

Laura Brooks, ARNP received her Bachelors in Nursing from the University of Michigan in 1987 and her Masters in Nursing from Graceland University in 2001. She moved to Central Florida in 1991. Since becoming a nurse practitioner, she has enjoyed treating patients of all ages. Laura has been working with ProHealth since 2009.

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Wanda Berrios-Diaz, M.D.

Dr. Wanda Berrios-Diaz was born in San Juan, Puerto Rico. She received a BA in Humanities from the University of Puerto Rico. Her BA in Biology was received from the San German Interamericana University. She was a professor of Anatomy at the Central University of the Caribbean Medical School. She attended medical school at San Juan Batista school of Medicine.

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Sarah LeMaster, ARNP

Sarah LeMaster is a Family Nurse Practitioner that has been working with ProHealth since March 2015. She has interests in women’s health issues, wellness for every person at every age, and gastrointestinal problems. She is a member and board certified by the American Academy of Nurse Practitioners.


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